Files: Extend search to also cover tags

fixes #326

Signed-off-by: Marcel Klehr <mklehr@gmx.net>

apps/files/lib/Search/FilesSearchProvider.php

@@ -29,6 +29,7 @@ declare(strict_types=1);
 
 namespace OCA\Files\Search;
 
+use OC\Files\Search\SearchBinaryOperator;
 use OC\Files\Search\SearchComparison;
 use OC\Files\Search\SearchOrder;
 use OC\Files\Search\SearchQuery;
@@ -103,7 +104,11 @@ class FilesSearchProvider implements IProvider {
 	public function search(IUser $user, ISearchQuery $query): SearchResult {
 		$userFolder = $this->rootFolder->getUserFolder($user->getUID());
 		$fileQuery = new SearchQuery(
-			new SearchComparison(ISearchComparison::COMPARE_LIKE, 'name', '%' . $query->getTerm() . '%'),
+			new SearchBinaryOperator(SearchBinaryOperator::OPERATOR_OR, [
+				new SearchComparison(ISearchComparison::COMPARE_LIKE, 'name', '%' . $query->getTerm() . '%'),
+				new SearchComparison(ISearchComparison::COMPARE_LIKE, 'tagname', '%' . $query->getTerm() . '%'),
+				new SearchComparison(ISearchComparison::COMPARE_LIKE, 'systemtag', '%' . $query->getTerm() . '%'),
+			]),
 			$query->getLimit(),
 			(int)$query->getCursor(),
 			$query->getSortOrder() === ISearchQuery::SORT_DATE_DESC ? [

lib/private/Files/Cache/Cache.php

@@ -850,13 +850,21 @@ class Cache implements ICache {
 				throw new \InvalidArgumentException("Searching by tag requires the user to be set in the query");
 			}
 			$query
-				->innerJoin('file', 'vcategory_to_object', 'tagmap', $builder->expr()->eq('file.fileid', 'tagmap.objid'))
+				->leftJoin('file', 'vcategory_to_object', 'tagmap', $builder->expr()->eq('file.fileid', 'tagmap.objid'))
-				->innerJoin('tagmap', 'vcategory', 'tag', $builder->expr()->andX(
+				->leftJoin('tagmap', 'vcategory', 'tag', $builder->expr()->andX(
 					$builder->expr()->eq('tagmap.type', 'tag.type'),
-					$builder->expr()->eq('tagmap.categoryid', 'tag.id')
+					$builder->expr()->eq('tagmap.categoryid', 'tag.id'),
+					$builder->expr()->eq('tag.type', $builder->createNamedParameter('files')),
+					$builder->expr()->eq('tag.uid', $builder->createNamedParameter($user->getUID()))
 				))
-				->andWhere($builder->expr()->eq('tag.type', $builder->createNamedParameter('files')))
+				->leftJoin('file', 'systemtag_object_mapping', 'systemtagmap', $builder->expr()->andX(
-				->andWhere($builder->expr()->eq('tag.uid', $builder->createNamedParameter($user->getUID())));
+					$builder->expr()->eq('file.fileid', $builder->expr()->castColumn('systemtagmap.objectid', IQueryBuilder::PARAM_INT)),
+					$builder->expr()->eq('systemtagmap.objecttype', $builder->createNamedParameter('files'))
+				))
+				->leftJoin('systemtagmap', 'systemtag', 'systemtag', $builder->expr()->andX(
+					$builder->expr()->eq('systemtag.id', 'systemtagmap.systemtagid'),
+					$builder->expr()->eq('systemtag.visibility', $builder->createNamedParameter(true))
+				));
 		}
 
 		$searchExpr = $this->querySearchHelper->searchOperatorToDBExpr($builder, $searchQuery->getSearchOperation());

lib/private/Files/Cache/CacheQueryBuilder.php

@@ -47,7 +47,7 @@ class CacheQueryBuilder extends QueryBuilder {
 
 	public function selectFileCache(string $alias = null) {
 		$name = $alias ? $alias : 'filecache';
-		$this->select("$name.fileid", 'storage', 'path', 'path_hash', "$name.parent", 'name', 'mimetype', 'mimepart', 'size', 'mtime',
+		$this->select("$name.fileid", 'storage', 'path', 'path_hash', "$name.parent", "$name.name", 'mimetype', 'mimepart', 'size', 'mtime',
 			'storage_mtime', 'encrypted', 'etag', 'permissions', 'checksum', 'metadata_etag', 'creation_time', 'upload_time')
 			->from('filecache', $name)
 			->leftJoin($name, 'filecache_extended', 'fe', $this->expr()->eq("$name.fileid", 'fe.fileid'));

lib/private/Files/Cache/QuerySearchHelper.php

@@ -81,7 +81,7 @@ class QuerySearchHelper {
 				return $shouldJoin || $this->shouldJoinTags($operator);
 			}, false);
 		} elseif ($operator instanceof ISearchComparison) {
-			return $operator->getField() === 'tagname' || $operator->getField() === 'favorite';
+			return $operator->getField() === 'tagname' || $operator->getField() === 'favorite' || $operator->getField() === 'systemtag';
 		}
 		return false;
 	}
@@ -162,8 +162,12 @@ class QuerySearchHelper {
 		} elseif ($field === 'favorite') {
 			$field = 'tag.category';
 			$value = self::TAG_FAVORITE;
+		} elseif ($field === 'name') {
+			$field = 'file.name';
 		} elseif ($field === 'tagname') {
 			$field = 'tag.category';
+		} elseif ($field === 'systemtag') {
+			$field = 'systemtag.name';
 		} elseif ($field === 'fileid') {
 			$field = 'file.fileid';
 		} elseif ($field === 'path' && $type === ISearchComparison::COMPARE_EQUAL) {
@@ -181,6 +185,7 @@ class QuerySearchHelper {
 			'path' => 'string',
 			'size' => 'integer',
 			'tagname' => 'string',
+			'systemtag' => 'string',
 			'favorite' => 'boolean',
 			'fileid' => 'integer'
 		];
@@ -191,6 +196,7 @@ class QuerySearchHelper {
 			'path' => ['eq', 'like'],
 			'size' => ['eq', 'gt', 'lt', 'gte', 'lte'],
 			'tagname' => ['eq', 'like'],
+			'systemtag' => ['eq', 'like'],
 			'favorite' => ['eq'],
 			'fileid' => ['eq']
 		];

tests/lib/Files/Cache/QuerySearchHelperTest.php

@@ -79,7 +79,7 @@ class QuerySearchHelperTest extends TestCase {
 		$this->numericStorageId = 10000;
 
 		$this->builder->select(['fileid'])
-			->from('filecache')
+			->from('filecache', 'file') // alias needed for QuerySearchHelper#getOperatorFieldAndValue
 			->where($this->builder->expr()->eq('storage', new Literal($this->numericStorageId)));
 	}